Method for detecting a direction of arrival of an acoustic target signal and binaural hearing system

Abstract

A method detects a direction of arrival of an acoustic target signal. A local device contains first and second local microphones, and a remote device contains a first remote microphone. The method includes the steps of: deriving a first local input signal from first and second local microphone signals, deriving a second local input signal from the first and/or second local microphone signals, and deriving a first remote input signal from the first remote microphone. The first and second local input signals and first remote input signal form a part of a set of input signals. A plurality of spatial feature quantities are each derived from different respective pairs, and are indicative of a spatial relation between the two corresponding input signals. The spatial feature quantities are input to a neural network. The direction of arrival of the acoustic target signal is estimated in the neural network.